CN112293112A - 一种防控温室大棚病虫害的方法 - Google Patents

一种防控温室大棚病虫害的方法 Download PDF

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CN112293112A
CN112293112A CN201910751666.3A CN201910751666A CN112293112A CN 112293112 A CN112293112 A CN 112293112A CN 201910751666 A CN201910751666 A CN 201910751666A CN 112293112 A CN112293112 A CN 112293112A
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greenhouse
pests
temperature
germs
vegetables
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高建明
易克贤
张世清
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Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural Sciences
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Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural Sciences
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00Protecting plants

Abstract

本发明是一种防控温室大棚病虫害的方法。寒冷季节温室大棚为蔬菜提供适应生长温度的同时,也为病菌、害虫提供了一定的生长条件。冬季北方地区寒冷,许多病菌、害虫不能在露地越冬,但可在温室大棚越冬。温室大棚内的害虫是露地春季蔬菜上的虫源,通过开窗通风或菜苗向露地移植,而使害虫迁飞露地。因此控制温室大棚内的害虫,将有利于减少春季露地虫害。本发明利用寒冷季节温度低的特点,在温室大棚内的菜采收完后,敞开温室大棚一定时间,利用低温杀死部分或全部温室大棚内的病菌、害虫。

Description

一种防控温室大棚病虫害的方法
技术领域
本发明涉及种防控温室大棚病虫害的方法,更具体地说是在寒冷季节防控温室大棚病虫害的方法。
背景技术
温室大棚能够在寒冷季节为寒冷地区的人们提供新鲜的蔬菜,因此受到了农民的广泛应用。但是温室大棚为蔬菜提供适应生长温度的同时,也为害虫以及病菌提供了一定的生长条件。
温室大棚蔬菜的主要虫害有夜蛾类、红蜘蛛、蚜虫、蓟马、跳甲、潜叶蝇、粉虱、霜霉菌等。
冬季北方地区寒冷,许多害虫、病菌不能在露地越冬,但可在温室大棚越冬。温室大棚内的害虫是露地春季蔬菜上的虫源,通过开窗通风或菜苗向露地移植,而使害虫迁飞露地。因此控制温室大棚内的害虫,将有利于减少春季露地虫害。
温室大棚常用的防虫技术有利用性诱剂,使用杀虫灯,物理防治,生物防治,化学防治等,这些技术需要较高的成本,寻找廉价有效的办法非常重要。
过冷却点是指昆虫体液结冰导致死亡的临界温度。已有的研究表明,夜蛾类的蛹期过冷却点-20℃左右,成虫-17℃左右,幼虫-14℃左右,其中4龄幼虫过冷却点-8.5℃左右;红蜘蛛的过冷却点为-20℃左右;蚜虫的过冷却点为-13℃左右;蓟马的过冷却点为-10℃左右;跳甲的过冷却点为-10℃左右。
研究还表明,即使达不到过冷却点,低温达到一定时间,也会导致害虫死亡。像粉虱在-2℃以下1h,低龄若虫开始死亡,24h后高龄若虫开始死亡,卵在-2℃的下6h后全部死亡,-4℃处理6h后粉虱所有虫态均全部死亡;美洲斑潜蝇在-8℃条件下,3d死亡率为100%;而南美斑潜蝇蛹在-8℃条件下,3d死亡率为70%。
发明内容
本发明是利用寒冷季节温度低的特点,在温室大棚内的菜采收完后,敞开温室大棚一定时间,期间可清除残枝败叶,即清除害虫、病菌的食物和庇护场所,利用低温杀死部分或全部温室大棚内的害虫、病菌。
具体实施方式
下面以温室大棚内采收完黄瓜、小白菜、豇豆后的防病虫为例,说明实施方式。
调查温室大棚内黄瓜植株上的害虫,重要的有粉虱、潜叶蝇,病菌有霜霉菌等。查询得知,粉虱在-2℃以下1h,低龄若虫开始死亡,24h后高龄若虫开始死亡,卵在-2℃的下6h后全部死亡,-4℃处理6h后粉虱所有虫态均全部死亡;潜叶蝇在-8℃条件下,3d死亡率为100%。而此时外界气温为-1℃至-6℃。在采收完、敞开棚后,分别于3、5天后封闭温室大棚,再次种植黄瓜,在两个月的观察期内,敞开10天的未见粉虱、潜叶蝇、霜霉菌,敞开5天的,粉虱、潜叶蝇、霜霉菌比采收后未敞开棚的,减少70-90%。如果在敞开时清除残枝败叶,即清除害虫、病菌的食物和庇护场所,效果更好。
调查温室大棚内小白菜上的害虫,重要的有小菜蛾、蚜虫、跳甲、白粉菌。查询得知,小菜蛾的蛹期过冷却点-20℃左右,成虫-17℃左右,幼虫-14℃左右,其中4龄幼虫过冷却点-8.5℃左右;蚜虫的过冷却点约为-13℃左右;跳甲的过冷却点约为-10℃左右。而此时外界气温为-1℃至-6℃。在采收完、敞开棚后,分别于5、10天后封闭温室大棚,再次种植小白菜,在一个月的观察期内,敞开10天的,未见小菜蛾、蚜虫、跳甲、白粉病,敞开5天的,小菜蛾、蚜虫、跳甲、白粉病比采收后未敞开棚的,减少70-85%。如果在敞开时清除残枝败叶,即清除害虫、病菌的食物和庇护场所,效果更好。
调查温室大棚内豇豆上的害虫,重要的有红蜘蛛、蓟马、锈菌。查询得知,红蜘蛛的过冷却点约为-20℃左右;蓟马的过冷却点约为-10℃左右。而此时外界气温为-1℃至-6℃。在采收完、敞开棚后,分别于5、10天后封闭温室大棚,再次种植豇豆,在一个月的观察期内,敞开10天的,未见红蜘蛛、蓟马、锈菌,敞开5天的,红蜘蛛、蓟马、锈菌比采收后未敞开棚的,减少80-90%。如果在敞开时清除残枝败叶,即清除害虫、病菌的食物和庇护场所,效果更好。
即使气温达不到某种害虫的过冷却点,只要低温达到一定时间,也会导致害虫、病菌死亡。在北方冬季,温室大棚敞开时间越长,杀病虫效果越好。
病菌害虫死亡除了与温度有关以外,也与湿度、暴露在冷空气中的时间相关。总的原则是,如果温室大棚外的气温显著高于害虫的过冷却点,则需延长敞开棚的时间。

Claims (1)

1.一种防控温室大棚病虫害的方法,其特征是,在寒冷季节,温室大棚内的菜采收完后,敞开温室大棚一定时间,利用低温杀死部分或全部温室大棚内的病菌、害虫。
CN201910751666.3A 2019-07-31 2019-07-31 一种防控温室大棚病虫害的方法 Withdrawn CN112293112A (zh)

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CN104956894A (zh) * 2015-07-03 2015-10-07 北京北菜园农业科技发展有限公司 一种有机蔬菜的培育方法
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CN101999292A (zh) * 2010-09-21 2011-04-06 刘广善 一种大棚洋葱的栽培方法
CN104255245A (zh) * 2014-09-15 2015-01-07 姚建成 生姜茎蔸过冬育种苗繁殖方法
CN104956894A (zh) * 2015-07-03 2015-10-07 北京北菜园农业科技发展有限公司 一种有机蔬菜的培育方法
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